Compositions comprising phase change materials and methods of making the same
In one aspect, compositions are described herein. In some embodiments, a composition comprises a phase change material, a hydrophobic sorption material, and a viscosity modifier. In some embodiments, a composition comprises a foam and a latent heat storage material dispersed in the foam, the latent heat storage material comprising a phase change material and a hydrophobic sorption material.
1. A method of making a foam comprising:
combining a phase change material, a polyfunctional monomer, and a linker component; and
cross-linking the linker component to at least one of the phase change material and the polyfunctional monomer,
wherein the polyfunctional monomer comprises a polyol;
wherein the linker component comprises an isocyanate;
wherein the phase change material has a phase transition temperature between −50° C. and 100° C.; and
wherein the foam comprises a polyurethane foam, and
wherein the phase change material comprises one or more fatty acids, one or more alkyl esters of a fatty acid, one or more fatty alcohols, one or more fatty sulfonates or phosphonates, or a combination thereof.
2. The method of claim 1 , wherein the polyol comprises a diol or a triol.
3. The method of claim 1 , wherein the polyol comprises a polyether polyol or a polyester polyol.
4. The method of claim 1 , wherein the isocyanate comprises a polyfunctional isocyanate.
5. The method of claim 4 , wherein the isocyanate comprises methylene diphenyl diisocyanate (MDI), toluene diisocyanate (TDI), naphthalene diisocyanate (NDI), isophorone diisocyanate (IPDI), and/or hexamethylene diisocyanate (HDI).
6. The method of claim 1 , wherein the phase change material has a phase transition temperature between 0° C. and 70° C.
7. The method of claim 1 , wherein the phase change material has a phase transition temperature between 30° C. and 50° C.
8. The method of claim 1 , further comprising adding a catalyst to the combination of the phase change material, the polyfunctional monomer, and the linker component.
9. The method of claim 8 , wherein the catalyst comprises a metal complex comprising mercury, lead, tin, bismuth or zinc.
10. The method of claim 1 , further comprising adding an additive to the combination of the phase change material, the polyfunctional monomer, and the linker component.
11. The method of claim 10 , wherein the additive comprises an antimicrobial material or a fire retardant.
12. The method of claim 1 , further comprising adding a blowing agent to the combination of the phase change material, the polyfunctional monomer, and the linker component.